Reply to post #26
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That's undoubtedly true nowadays, but Christie was one of the first (if not
the first) mystery author to use it. A case of "the demons that I called ..."? -- Also, there's a twist to it that comes out in the final solution which still distinguishes this from other uses of that particular plot device ...
(hide spoiler) in that the lovers deliberately use a false double confession to deflect attention from the fact that they really are the murderers. I think this is rather neatly done, actually.(show spoiler)
I'm less convinced the technical construction of the murder as ultimately revealed would actually have worked, though. Fortunately Christie doesn't rely on convoluted methods like this one all too frequently, because whenever she does, I'm going "nope, forget it, no way would this work reliably in real life!" She does something even more lurid in "Hercule Poirot's Christmas," which is one of my favorite AC mysteries and -- if only for sentimental reasons -- a fixture in my annual Christmas DVD canon ... except for the final revelation of the method of murder, which routinely makes me snort!